This week in photos: 24 striking photos that help define the week

Thursday, January 31, 2013 1:20 PM

A white lion, right, plays with a white tiger at Serengeti-Park zoo in Hodenhagen, northern Germany, Jan. 30, 2013. Four white tigers and four white lions were born in the zoo in October and November 2012. (AP Photo/dpa Julian Stratenschulte)